Charter Oak, CA Weather - Forecast & Monthly Averages

TEMPERATURE	77
HUMIDITY	13
PRESSURE
WIND COND.	260 4.8

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Weather Quick Facts

The highest monthly average temperature in Charter Oak for August is 77.8 degrees
The lowest monthly average temperature in Charter Oak for December is 54.5 degrees
The most monthly precipitation in Charter Oak occurs in December with 2.6 inches
The air quality index in Charter Oak is 111% worse than the national average
The pollution index in Charter Oak is 5017% worse than the national average

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Charter Oak Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	44°F	69°F	56°F	2.3"
February	45°F	70°F	57°F	2.0"
March	48°F	74°F	60°F	1.2"
April	51°F	77°F	62°F	0.7"
May	55°F	81°F	66°F	0.4"
June	60°F	88°F	72°F	0.0"
July	65°F	94°F	77°F	0.1"
August	65°F	95°F	78°F	0.0"
September	64°F	93°F	76°F	0.2"
October	57°F	84°F	69°F	0.4"
November	49°F	77°F	62°F	0.6"
December	43°F	68°F	55°F	2.6"

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Charter Oak air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Charter Oak	California	National
Air quality index	89	55	42
Pollution index	139,490,000	10,473,190	2,726,193

Charter Oak air quality

Measurement	Total
Days measured	365
Days with good air quality	42
Days with moderate air quality	178
Days w/ poor A.Q. for sensitive groups	79
Days with unhealthy air quality	58

Air quality details

Pollutant	Total
Arsenic	0.200%
Benzene	0.950%
Carbon Tetrachloride	0.080%
Lead	1.320%
Mercury	0.440%

Average monthly Charter Oak temperature with heat index

Charter Oak monthly precipitation with daily maximum

Charter Oak monthly snow depth with daily maximum

Charter Oak monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Industry, CA	264	72	44.0%
South San Jose Hills, CA	19,104	72	44.0%
West Covina, CA	105,808	72	44.0%
Fullerton, CA	141,061	72	44.0%
Montebello, CA	62,697	72	44.0%
Charter Oak, CA	9,963	89	78.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Kapaa, HI	9,961	13	74.0%
Pleasant Hill, IA	9,959	39	22.0%
River Grove, IL	9,957	55	10.0%
Lambertville, MI	9,970	40	20.0%
Red Bank, SC	9,971	43	14.0%
Charter Oak, CA	9,963	89	78.0%

Source: The Charter Oak, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.